In internal combustion engines, a phenomenon occurs where combustion gases leak past the piston rings and enter the crankcase. These gases, containing unburnt fuel, water vapor, and other byproducts of the combustion process, create pressure within the crankcase. For example, if an engine exhibits reduced power and excessive oil consumption, it may be due to a significant amount of this leakage.
Managing this process is crucial for engine longevity and optimal performance. Excessive pressure buildup within the crankcase can lead to seal damage, oil leaks, and reduced engine efficiency. Historically, controlling these gases has been a constant challenge in engine design, leading to the development of various crankcase ventilation systems to mitigate its negative effects.
